Zach put his two beautiful, diligent maids to work at once. Well, mostly. Yanael was fine for at least one part. Zach didn't even have to be nearby for her to find Anerias and the monsters he lured on her own. That was one of the many chores of Zach's that he no longer needed to bother about.
But the thing Zach needed the most help with was making full use of his special access to the library.
As long as Zach was there, he and whoever he brought could ask for any information they wanted. If the information existed in the library or wasn't hidden behind another layer of confidentiality, they would get it by asking.
That was where the problem lay. Zach had to be there. It increased the efficiency of the information-gathering but it didn't necessarily mean he had more time on his hands for other things. They simply gathered more and better information in the same amount of time.